Portable spraying apparatus



Jan. 10, 1939. F. A. CUFF PORTABLE SPRAYING APPARATUS 4, 1936 2Sheets-Sheet l Filed Dec.

R mFm m N F w W T mm A A M D may F Jan. 1Q, 1939. I F, F 2,143,260 IPORTABLE SPRAYING'APPARATUS Q Filed Dec. 4, 1956 2 Sheets-Sheet 2LNVENTOR FREDA. cum- By 53, W W

AT ORNEYS Patented Jan. 10, 1939 UNITED STATES PATENT OFFICE PORTABLESPRAYING APPARATUS Application December 4, 1936, Serial No. 114,222

5 Claims.

This invention relates to improvements in sprayers of the typecomprising a supply tank having a removable pump therein for creatingspraying pressure. One of the objects of the invention is to provide aconstruction by which withdrawal of the pump for filling purposes isunnecessary, thereby avoiding dirtying of the pump, which frequentlyoccurs when the pump is withdrawn andlaid on the ground.

Another object is to unfailingly relieve pressure before refilling isstarted and without disconnecting or removing the pump. In the specificembodiment illustrated, this object is accomplished by lowering afilling opening closure element which motion opens the filling openingand at the same time releases the tank pressure.

A feature of this embodiment of the invention is that the closureelement or plate forms a hanger for the pump and the pump is detachablysecured in this hanger so that it may be removed independently of thehanger. Another feature is the toggle construction and the use of leversto provide power, by which good clamping and sealing action can beobtained.

Features include all details of construction, along with the broaderideas of means inherent in the disclosure.

Objects, features and advantages of the invention will be set forth inthe description of the drawings forming a part of this application, andin said drawings Figure 1 is a central vertical section, approximatelyon line II of Figure 3 showing the filling opening closure in closedposition;

Figure 2 is a View similar to Figure 1 showing the closure open, and infilling and tank-pressurereleasing position;

Figure 3 is a plan View, with the parts positioned as in Figure 1;

Figure 4 is an elevation of the top portion of the pump barrel,illustrating means for attaching it to the cap;

Figure 5 is a top plan of Figure 4; and

Figure 6 is a bottom plan of the cap showing parts related to theconnection of the barrel.

In the drawings, numeral I generally indicates a vertically elongatedtank, only the upper portion of which has been shown. Adjacent the top,the tank is punched circumferentially inwardly as at 2, to form asealing and stop shoulder. Against this shoulder and supported thereonand. suitably sealingly secured to the body of the tank is an end wallor top generally indicated at 3. This wall has a downwardly inwardlyconvergent conical portion 4 as a funnel merging into a horizontalportion 5 which has therein a centrally disposed filling opening 6. Theabove may be of any approved construction, but the funnel shape is afeature of this invention, and facilitates filling.- 5

A closure means, adapted to sealingly close the filling opening, isgenerally indicated at H). In this instance, said means is a plate whichhas a flat peripheral portion having a channel H on its upper face,which channel receives the sealing l gasket I2. This gasket cooperateswith the bottom surface of the horizontal portion of the funnel tosealingly close the filling opening t. The closure element has anupwardly inwardly convergent conical portion [6 which projects up-Wardly through the opening when closure plate i0 is in closing position.The closure element Ill, see Figure 3, as well as the opening 6, areelliptical in contour to permit the plate to be passed through theopening to operate within the tank and move upwardly to sealingposition.

The plate In is controlled in this instance by means of twolever-operated toggle structures identical in construction and placed,in this instance, one near each extremity of the long axis of theelliptical closure. Each toggle structure comprises a pair of ears 18secured to the conical portion of the plate I0, between which cars ispivoted as at 19 a link 20. The conical portion of the top 3 hasattached thereto a pair of ears 2! between which is pivoted as at 22 alever 23. The link 20 is pivoted to this lever as at 25. In Figure 1,the lever-operated toggle structures are sealingly holding the closureelement in closed position. Figure 2 shows the parts in fillingposition, with the tank pressure released. Means other than toggles orlevers can be used, for moving the cover to open and closed positions,and there is no intention to limit the broader aspects of this inventionto this specific structure, although the specific structure is alsoclaimed. The plate it] may be considered a kind of hanger for thecylinder of the pump, and the pump is so attached as to be removableindependently of the plate. To this end, the plate is provided with adownwardly directed cylindrical portion 33 interiorly screw-threaded asat 3| to receive the correspondingly threaded hollow plug or cap 32.This cap has a central opening 33 through which the stem 34 of the pumppiston slidably passes. A handle for the stem is indicated at 35, andthe handle has integral therewith a plate 36 having on its bottomdiametrically related lugs 31 having feet 38 which are adapted to beregistered with and to enter corresponding diametrically relatedopenings 39 of the cap, see Figure 6. After entry into the openings andon rotation of the stem, the feet 38 pass beneath portions 40 of thecap. On further rotation of the handle, the lugs 31 engage the ends 4!of arcuate slots 42 to either screw or unscrew the cap. This structureis a feature of this invention.

Another feature of the invention is the manner of detachably securingthe pump cylinder to the cap, and this is best illustrated in Figures l,4, 5 and 6. To this end, the top of the pump cylinder is provided with alower circumferential outstanding flange 43 which engages with theshoulder M at the bottom of the downwardly directed cylindricalextension of the cap, after the pump cylinder has been passed downwardlythrough the opening 45 of the cap. Above this flange 43, the barrel isprovided with two diametrically related bent-out segmental flanges '85.The outer diameter of these flanges is slightly less than the innerdiameter of the cap. The cap is also provided with outstanding segmentalflanges fill also diametrically arranged, and with which the flanges 46are adapted to cooperate to sealingly secure the barrel to the cap, andagainst motion in axial direction. To attach the cap to the barrel,flanges 46 are registered with the portions 48 of the cap and the barrelis moved axially inwardly and then turned until the stops 50 engage theends 5| of flanges 49. After assembly, solder (not shown) is applied tosealingly secure the parts against relative rotation. After the barrelhas been suitably attached to the plug or cap, the cap is screwed intothe position shown in Figure l and. the device is ready for use.

To attach the cap to or detach it from the filling-opening-closureelement, the handle is merely rotated in the appropriate direction fromits position in Figure 1. In case the operator should both raise androtate the handle, the feet 38 come in contact with the under surface ofthe top of the cap, and on rotation, come into engagement with the guardlugs 52, which prevents registration, and therefore accidentalwithdrawal through the openings 39. To be brought through said openingsfor pumping, the feed must be lowered to clear the lugs 52, and thenregistration of the feet with the openings 39 can be made preparatory toupward withdrawal through the openings.

I claim as my invention:

1. In an apparatus of the class described, a tank having an end wallprovided with a suitable opening surrounded by an annular seat, aclosure for said opening, a pump secured to the closure and having ahandle whereby the pump may be operated to create pressure in the tankto dispense the contents therefrom, levers pivoted to the end wall ofthe tank and having links operatively connecting them with the closure,whereby when the levers are swung outwardly, the closure is forced intosealing engagement with said seat, and when said levers are swunginwardly, the cover is released from the seat, and means whereby saidhandle may be positioned to prevent said levers from being operated torelease the cover.

2. In an apparatus of the class described, a tank having an end wallprovided with a filling opening having an annular seat, a closure forsaid opening, means secured to the closure for dispensing the contentsfrom the tank, said means having a suitable operating handle adapted forrotary movement, oppositely disposed levers pivoted to the end wall ofthe tank and having links operatively connecting them with the closure,whereby when the levers are swung outwardly, the closure is forced intosealing engagement with its seat, and when said levers are swunginwardly, the cover is released therefrom, and means whereby said handlemay be positioned in the path of said levers, whereby said levers cannotbe operated to release the cover.

3. In an apparatus of the class described, a tank having an end wallprovided with a filling opening surrounded by a seat, a closure adaptedto sealingly engage said seat, a pump carried by the closure and havingan operating handle whereby pressure may be created within the tank todispense the contents therefrom, means on the handle adapted forinterlocking engagement with the closure whereby the handle may be usedfor carrying the apparatus about from place to place,

toggle means for securing the cover in sealing r engagement with saidseat, said toggle means comprising oppositely disposed levers pivotallymounted on the end wall of the tank and having links connecting them tothe closure, whereby when the levers are swung outwardly, the

closure is forced into sealing engagement with its seat, said handlewhen interlocked with the closure, being positioned in the path of saidlevers whereby they cannot be operated to release the cover, and meanswhereby when the handle is rotated to a predetermined position, saidlevers may be operated to release the cover.

4 In an apparatus of the class described, a tank having an end wallprovided with a filling opening surrounded by a seat, a closure adaptedto sealingly engage said seat, a pump carried by the closure and havingan operating handle whereby pressure may be created within the tank todispense the contents therefrom, means on the handle adapted forinterlocking engagement means comprising oppositely disposed leverspivotally mounted on the end wall of the tank and having linksconnecting them to the closure, whereby when the levers are swungoutwardly, the closure is forced into sealing engagement with its seat,said handle when interlocked with the closure, being positioned in thepath of said levers, whereby they cannot be operated to release thecover, when the handle is used for carrying the apparatus, and meanswhereby the handle may be moved out of interlocking engagement with theclosure to permit operation of the handle and whereby said levers may beoperated to release the cover.

5. In an apparatus of the class described, a tank having an end wallprovided with a filling opening surrounded by a seat, a closure adaptedto sealingly engage said seat, a pump carried by the closure and havingan operating handle whereby pressure may be created within the tank todispense the contents therefrom, means on the handle adapted forinterlocking engagement with the closure whereby the handle may be usedfor carrying the apparatus about from place to place, toggle means forsecuring the cover in sealing engagement with said seat, said togglemeans comprising oppositely disposed levers pivotally mounted on the endwall of the tank and having links connecting them to the closure,whereby when thelevers are swung outwardly,

the closure is forced into sealing engagement with its seat, said handlewhen interlocked with the closure, being positioned in the path of saidlevers, whereby they cannot be operated to release the cover, when thehandle is used for carrying the apparatus, means whereby the handle maybe moved out of interlocking engagement with the closure to permitoperation of the handle, and whereby said levers may be operated torelease the cover, and means whereby the pump and operating handle maybe detached from the closure.

FRED A. CUFF.

